[PATCH v3] ARM: dts: add DT for lan966x SoC and 2-port board pcb8291

From: Kavyasree Kotagiri
Date: Thu Jan 13 2022 - 03:01:17 EST

This patch adds basic DT for Microchip lan966x SoC and associated board
pcb8291(2-port EVB). Adds peripherals required to allow booting: IRQs,
clocks, timers, memory, flexcoms, GPIOs. Also adds other peripherals like
crypto(AES,SHA), DMA and watchdog.

Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@xxxxxxxxxxxxx>
---
v2 -> v3:
- Enabling trng in dtsi itself.
- Removed "status=okay" dma0.
- Add gpio pin settings for can0(missed adding this in previous version)

v1 -> v2:
- Moved flx3 usart0 node to dtsi file.
- Removed status="okay" for dma0 to maintain consistency across nodes
(which means enabling dma0 by default)

arch/arm/boot/dts/Makefile | 2 +
arch/arm/boot/dts/lan966x.dtsi | 242 ++++++++++++++++++++++++++
arch/arm/boot/dts/lan966x_pcb8291.dts | 53 ++++++
3 files changed, 297 insertions(+)
create mode 100644 arch/arm/boot/dts/lan966x.dtsi
create mode 100644 arch/arm/boot/dts/lan966x_pcb8291.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 235ad559acb2..2040a990f08c 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -735,6 +735,8 @@ dtb-$(CONFIG_SOC_IMX7D) += \
dtb-$(CONFIG_SOC_IMX7ULP) += \
imx7ulp-com.dtb \
imx7ulp-evk.dtb
+dtb-$(CONFIG_SOC_LAN966) += \
+ lan966x_pcb8291.dtb
dtb-$(CONFIG_SOC_LS1021A) += \
ls1021a-moxa-uc-8410a.dtb \
ls1021a-qds.dtb \
diff --git a/arch/arm/boot/dts/lan966x.dtsi b/arch/arm/boot/dts/lan966x.dtsi
new file mode 100644
index 000000000000..d7bc36a998bc
--- /dev/null
+++ b/arch/arm/boot/dts/lan966x.dtsi
@@ -0,0 +1,242 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * lan966x.dtsi - Device Tree Include file for Microchip LAN966x family SoC
+ *
+ * Copyright (C) 2021 Microchip Technology, Inc. and its subsidiaries
+ *
+ * Author: Kavyasree Kotagiri <kavyasree.kotagiri@xxxxxxxxxxxxx>
+ *
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/mfd/atmel-flexcom.h>
+#include <dt-bindings/dma/at91.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/microchip,lan966x.h>
+
+/ {
+ model = "Microchip LAN966x family SoC";
+ compatible = "microchip,lan966x";
+ interrupt-parent = <&gic>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a7";
+ clock-frequency = <600000000>;
+ reg = <0x0>;
+ };
+ };
+
+ memory@60000000 {
+ device_type = "memory";
+ reg = <0x60000000 0x40000000>; /* 1GB */
+ };
+
+ clocks {
+ sys_clk: sys_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <162500000>;
+ };
+
+ cpu_clk: cpu_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <600000000>;
+ };
+
+ ddr_clk: ddr_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <300000000>;
+ };
+
+ nic_clk: nic_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <200000000>;
+ };
+ };
+
+ clks: clock-controller@e00c00a8 {
+ compatible = "microchip,lan966x-gck";
+ #clock-cells = <1>;
+ clocks = <&cpu_clk>, <&ddr_clk>, <&sys_clk>;
+ clock-names = "cpu", "ddr", "sys";
+ reg = <0xe00c00a8 0x38>;
+ };
+
+ timer {
+ compatible = "arm,armv7-timer";
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+ <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+ <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
+ <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
+ clock-frequency = <37500000>;
+ arm,cpu-registers-not-fw-configured;
+ };
+
+ soc {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ flx0: flexcom@e0040000 {
+ compatible = "atmel,sama5d2-flexcom";
+ reg = <0xe0040000 0x100>;
+ clocks = <&clks GCK_ID_FLEXCOM0>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0xe0040000 0x800>;
+ status = "disabled";
+ };
+
+ flx1: flexcom@e0044000 {
+ compatible = "atmel,sama5d2-flexcom";
+ reg = <0xe0044000 0x100>;
+ clocks = <&clks GCK_ID_FLEXCOM1>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0xe0044000 0x800>;
+ status = "disabled";
+ };
+
+ trng: trng@e0048000 {
+ compatible = "atmel,at91sam9g45-trng";
+ reg = <0xe0048000 0x100>;
+ clocks = <&nic_clk>;
+ };
+
+ aes: aes@e004c000 {
+ compatible = "atmel,at91sam9g46-aes";
+ reg = <0xe004c000 0x100>;
+ interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&dma0 AT91_XDMAC_DT_PERID(13)>,
+ <&dma0 AT91_XDMAC_DT_PERID(12)>;
+ dma-names = "rx", "tx";
+ clocks = <&nic_clk>;
+ clock-names = "aes_clk";
+ };
+
+ flx2: flexcom@e0060000 {
+ compatible = "atmel,sama5d2-flexcom";
+ reg = <0xe0060000 0x100>;
+ clocks = <&clks GCK_ID_FLEXCOM2>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0xe0060000 0x800>;
+ status = "disabled";
+ };
+
+ flx3: flexcom@e0064000 {
+ compatible = "atmel,sama5d2-flexcom";
+ reg = <0xe0064000 0x100>;
+ clocks = <&clks GCK_ID_FLEXCOM3>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0xe0064000 0x800>;
+ status = "disabled";
+
+ usart0: serial@200 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0x200 0x200>;
+ interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&nic_clk>;
+ clock-names = "usart";
+ atmel,fifo-size = <32>;
+ status = "disabled";
+ };
+ };
+
+ dma0: dma-controller@e0068000 {
+ compatible = "microchip,sama7g5-dma";
+ reg = <0xe0068000 0x1000>;
+ interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <1>;
+ clocks = <&nic_clk>;
+ clock-names = "dma_clk";
+ };
+
+ sha: sha@e006c000 {
+ compatible = "atmel,at91sam9g46-sha";
+ reg = <0xe006c000 0xec>;
+ interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&dma0 AT91_XDMAC_DT_PERID(14)>;
+ dma-names = "tx";
+ clocks = <&nic_clk>;
+ clock-names = "sha_clk";
+ };
+
+ flx4: flexcom@e0070000 {
+ compatible = "atmel,sama5d2-flexcom";
+ reg = <0xe0070000 0x100>;
+ clocks = <&clks GCK_ID_FLEXCOM4>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0xe0070000 0x800>;
+ status = "disabled";
+ };
+
+ timer0: timer@e008c000 {
+ compatible = "snps,dw-apb-timer";
+ reg = <0xe008c000 0x400>;
+ clocks = <&nic_clk>;
+ clock-names = "timer";
+ interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ watchdog: watchdog@e0090000 {
+ compatible = "snps,dw-wdt";
+ reg = <0xe0090000 0x1000>;
+ interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&nic_clk>;
+ };
+
+ can0: can@e081c000 {
+ compatible = "bosch,m_can";
+ reg = <0xe081c000 0xfc>, <0x00100000 0x4000>;
+ reg-names = "m_can", "message_ram";
+ interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "int0", "int1";
+ clocks = <&clks GCK_ID_MCAN0>, <&clks GCK_ID_MCAN0>;
+ clock-names = "hclk", "cclk";
+ assigned-clocks = <&clks GCK_ID_MCAN0>;
+ assigned-clock-rates = <40000000>;
+ bosch,mram-cfg = <0x0 0 0 64 0 0 32 32>;
+ status = "disabled";
+ };
+
+ gpio: pinctrl@e2004064 {
+ compatible = "microchip,lan966x-pinctrl";
+ reg = <0xe2004064 0xb4>,
+ <0xe2010024 0x138>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&gpio 0 0 78>;
+ interrupt-controller;
+ interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
+ #interrupt-cells = <2>;
+ };
+
+ gic: interrupt-controller@e8c11000 {
+ compatible = "arm,gic-400", "arm,cortex-a7-gic";
+ #interrupt-cells = <3>;
+ interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ reg = <0xe8c11000 0x1000>,
+ <0xe8c12000 0x2000>,
+ <0xe8c14000 0x2000>,
+ <0xe8c16000 0x2000>;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/lan966x_pcb8291.dts b/arch/arm/boot/dts/lan966x_pcb8291.dts
new file mode 100644
index 000000000000..cf54f42c763d
--- /dev/null
+++ b/arch/arm/boot/dts/lan966x_pcb8291.dts
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * lan966x_pcb8291.dts - Device Tree file for PCB8291
+ */
+/dts-v1/;
+#include "lan966x.dtsi"
+
+/ {
+ model = "Microchip EVB - LAN9662";
+ compatible = "microchip,lan9662-pcb8291", "microchip,lan9662", "microchip,lan966";
+};
+
+&gpio {
+ fc_shrd7_pins: fc_shrd7-pins {
+ pins = "GPIO_49";
+ function = "fc_shrd7";
+ };
+
+ fc_shrd8_pins: fc_shrd8-pins {
+ pins = "GPIO_54";
+ function = "fc_shrd8";
+ };
+
+ fc3_b_pins: fcb3-spi-pins {
+ /* SCK, RXD, TXD */
+ pins = "GPIO_51", "GPIO_52", "GPIO_53";
+ function = "fc3_b";
+ };
+
+ can0_b_pins: can0_b_pins {
+ /* RX, TX */
+ pins = "GPIO_35", "GPIO_36";
+ function = "can0_b";
+ };
+};
+
+&can0 {
+ pinctrl-0 = <&can0_b_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&flx3 {
+ atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
+ status = "okay";
+
+ usart0: serial@200 {
+ pinctrl-0 = <&fc3_b_pins>, <&fc_shrd7_pins>, <&fc_shrd8_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+ };
+};
+
--
2.17.1